Stress‐induced Domain Wall Motion in a Ferroelastic Mn3+ Spin Crossover Complex

Jakobsen, Vibe B. and Trzop, Elzbieta and Gavin, Laurence C. and Dobbelaar, Emiel and Chikara, Shalinee and Ding, Xiaxin and Esien, Kane and Müller-Bunz, Helge and Felton, Solveig and Zapf, Vivien S. and Collet, Eric and Carpenter, Michael A. and Morgan, Grace Genevieve (2020) Stress‐induced Domain Wall Motion in a Ferroelastic Mn3+ Spin Crossover Complex. Angewandte Chemie. ISSN 0044-8249 DOI https://doi.org/10.1002/anie.202003041

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Abstract

Domain wall motion is detected for the first time during the transition to a ferroelastic and spin‐state ordered phase of a spin crossover complex. Single crystal X‐ray diffraction and resonant ultrasonic spectroscopy (RUS) revealed two distinct symmetry‐breaking phase transitions in the mononuclear Mn 3+ compound [Mn(3,5‐diBr‐sal 2 (323))]BPh 4 , 1. The first at 250 K, involves the space group change Cc → Pc and is thermodynamically continuous, while the second, Pc → P1 at 85 K, is discontinuous and related to spin crossover and spin‐state ordering. Stress‐induced domain wall mobility was detected as softening of the phonon modes at the Pc → P1 transition.

Item Type:	Article
Uncontrolled Keywords:	2020AREP; IA76
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences 07 - Gold Open Access
Journal or Publication Title:	Angewandte Chemie
Identification Number:	https://doi.org/10.1002/anie.202003041
Depositing User:	Sarah Humbert
Date Deposited:	07 May 2020 17:33
Last Modified:	01 Jul 2020 00:27
URI:	http://eprints.esc.cam.ac.uk/id/eprint/4732

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